What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
Let me please inform you, that the Multiple Upload tool is not designed for large uploads. In order to accept files larger than 300MB you will need to:
1. Disable Allow Multiple Option on your upload field.
2. Increase the Max File Size value, 1048576 (KB) = 1 (GB), so you can try that value if you want to set a limit of 1GB.
Related article: Changing the Upload Size Limit
Please feel free to contact us if you need any further assistance. We will be happy to help.